package net.lzzy.config;

import org.springframework.context.annotation.Configuration;
import org.springframework.web.servlet.HandlerInterceptor;
import org.springframework.web.servlet.ModelAndView;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@Configuration
public class MyInterceptor implements HandlerInterceptor {
    @Override
    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) throws Exception {
        //System.out.println("前处理");
        String uri = request.getRequestURI();
        Object user =request.getSession().getAttribute("username");
        if(uri.startsWith("/don") && null == user){
            response.sendRedirect("/login");
            return true;
        }
//        response.sendRedirect("/login");
        return true;
    }

    @Override
    public void postHandle(HttpServletRequest request, HttpServletResponse response, Object handler, ModelAndView modelAndView) throws Exception {
        //System.out.println("后处理");
        request.setAttribute("msg","后置拦截器传递");
    }

    @Override
    public void afterCompletion(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) throws Exception {
        //System.out.println("最后");
    }
}
